AnswersGA-GSE Physical Science AStates of MatterQuestion 2
2
QuizMultiple Choice

States of Matter

Question 2 • GA-GSE Physical Science A

Density involves the amount of a material in a certain volume. When a material changes phases, it changes in density in a predictable way as the amount of material stays the same but the molecules get farther apart or closer together. Water has solid and liquid states that do not follow these predictions of density in the phases of matter.

Answer
A
The solid state is the most dense, followed by the liquid state, then the gas state.
B
The solid state is more dense than the liquid state.
C
The liquid state is more dense than the solid state.
D
The gas state is the most dense, followed by the liquid state, then the solid state.

Explanation

Water is unusual because its solid form, ice, is less dense than its liquid form. When water freezes, its molecules arrange into a structure that takes up more space for the same amount of material. Therefore, the liquid state is more dense than the solid state, which is choice C.

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